The Sound Town STLF-12VS is a 12” universal replacement driver for PA/DJ speakers and subwoofers; it is compatible with the Sound Town PA speakers & subwoofers and speakers of other brands which need a 12” low-frequency driver. The woofer comes with 8-ohm impedance and has a frequency range of 38 Hz - 2 kHz. It is built in a steel chassis and has a paper cone with cloth edge. With 250W RMS power handling capability, the STLF-12VS delivers massive and deep bass and makes a great replacement woofer for your 12-inch PA speakers or subwoofer cabinet. FEATURES 12“ steel frame, replacement woofer for PA speaker and subwoofer cabinets 250W RMS, 500W peak power handling at 8-ohm 38 Hz - 2 kHz frequency response 2“ (4-layer) voice coil and one 50 oz magnet produces super bass SPECIFICATIONS Details Model STLF-12VS Resonance 38Hz Nominal Basket Diameter 12" Frequency Response 38Hz - 2kHz Nominal Impedance 8Ω Sensitivity 94±3dB Power Rating 250W RMS Magnet Weight 50oz Peak Power 500W Peak Voice Coil Diameter 2" VC (4 layers) Thiele & Small Parameters Resonant Frequency (fs) 38Hz Compliance Equivalent Volume (Vas) 115.2 liters DC Resistance (Re) 4.8Ω Mechanical Compliance of Suspension (Cms) 0.321 mm/N Mechanical Q (Qms) 3.799 BL Product (BL) 17.32 Tm Electromagnetic Q (Qes) 0.244 Diaphragm Mass Inc. Airload (MMs) 74.61 g Total Q (Qts) 0.229 Surface Area of Cone (Sd) 509.6 cm2 Mounting Information Efficiency Bandwidth 140 Baffle Hole Diameter 11.0", 280mm Sealed 13.6 liters / 0.345 cu.ft. Installation Position Diameter 11.65", 296mm Vented 20.58 liters / 0.726 cu.ft. Mounting Holes Diameter 8-0.26"x0.35", 6.5x9mm Overall Diameter 12.3", 312mm Net Weight 9.02lbs, 4.1kg Depth 5.55", 141mm Materials of Construction Coil Construction Round copper Cone Composition Paper cone Coil Former Aluminum Cone Edge Composition Cloth edge Magnet Composition Ferrite Dust Cap Composition Paper cap Basket Materials Steel   Shipping Weight & Dimensions Shipping Weight  11.1 lbs  Shipping Dimensions 14.5" x 13.3" x 7.6"  Warranty/Certifications Manufacturer Warranty 1 year  Â